Heat exchange device and device for receiving heat generation body

ABSTRACT

A heat exchanger of a heat exchange device includes stacked plate members, each including rectification walls that partition the surface into a lane shape. The rectification walls can include straight-line portions extending along a long side from a first end towards a second end and curved portions. The curve portions include arc-like portions bended from the straight-line portions toward the first long side, and first extending portions extending from the first arc-like portions to the first long side. A curved face being curved towards the first long side can be provided on the curved portions.

CROSS-REFERENCE TO RELATED APPLICATIONS

This present application is a divisional application of U.S. applicationSer. No. 12/808,287 filed on Jun. 15, 2010, which is a U.S. Nationalstage application of international application PCT/JP2008/003781 filedon Dec. 16, 2008, and claims priority under 35 U.S.C. §119(a) toJapanese Patent Application No. 2007-324357 filed Dec. 17, 2007,Japanese Patent Application No. 2008-008876 filed Jan. 18, 2008, andJapanese Patent Application No. 2008-289549 filed Nov. 12, 2008, theentire contents of which are hereby incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to a heat exchange device and a device fora receiving heat generation body using the same.

BACKGROUND ART

In recent years, with the development of telecommunication networks, thenumber of cellular phones has increased dramatically compared to thenumber of fixed-line phones, and a number of base stations of cellularphones have been installed accordingly. From a certain perspective, thebase stations of cellular phones may be regarded as extremely large heatgeneration bodies or sources from the viewpoint of the fact that theyconsume power, because an electric current of several tens of amperes orhigher, for example, flows therethrough. In a cellular phone basestation which serves as such a heat generation body, since manyelectronic devices are installed in the base station, there is a problemin that the operating temperature of the electronic devices rises due toheat generated from the base station itself, thus disturbing stableoperation.

To solve such a problem, it is very important to cool down the basestation serving as a heat generation body in order to ensure thelong-term stable operation of the many electronic devices in the basestation. In the related art, such a cellular phone base station has aconfiguration as described below so as to achieve cooling of the basestation itself.

That is to say, a device for receiving a heat generation body as acellular phone base station is configured to include a cabinet thatreceives electronic devices such as a transmitter or a receiver servingas a heat generation body and a heat exchange device mounted on anopening of the cabinet. The heat exchange device has a structure asdescribed below, for example.

That is to say, the heat exchange device is configured to include a bodycase having a first intake port and a first discharge port for outsideair and a second intake port and a second discharge port for air insidethe cabinet, a blast fan, and a heat exchanger. Here, the blast fan isconfigured to include a first blast fan for outside air and a secondblast fan for air inside the cabinet which are provided in the bodycase. Moreover, the heat exchanger performs heat exchange between theoutside air and the air inside the cabinet in the body case.

The heat exchanger has a structure, for example, in which a second platemember is stacked on the surface of a first plate member with apredetermined gap therebetween, and a third plate member is stacked onthe surface of the second plate member with a predetermined gaptherebetween. A plurality of first rectification walls that partitionsthe surface of the first plate member into a lane shape is provided onthe surface of the first plate member opposing the second plate member.Moreover, a plurality of second rectification walls that partitions thesurface of the second plate member into a lane shape is provided on thesurface of the second plate member opposing the third plate member.

As prior art citation information related to the invention of thisapplication, Patent Citation 1 is known, for example.

In the heat exchanger of the conventional heat exchange device describedabove, rectification walls are provided on the surface of the firstplate member and the second plate member, for example. In this way, theoutside air and the air inside the cabinet can flow smoothly anduniformly over the large surfaces of the first plate member and thesecond plate member, thus increasing the heat exchange efficiency of theheat exchanger.

When producing such a heat exchanger, the first plate member and thesecond plate member can be formed relatively easily by integral molding.For example, the use of synthetic resin or the like enables forming therectification walls at once. Therefore, it can be said that the heatexchanger can be produced with extremely high productivity.

However, in many cases, since the cellular phone base station isinstalled outdoors, if the outside air temperature is high, the internaltemperature of the cabinet will rise too high. When the internaltemperature rises to such a high temperature, in the heat exchanger madefrom synthetic resin or the like, the first plate member and the secondplate member will thermally expand because they are made from syntheticresin. As a result, the expanded walls of these plate members may sagbetween the rectification walls. Thus, there is a problem in that theflow of air is not rectified smoothly, the air-flow resistanceincreases, and the heat exchange efficiency decreases.

-   Patent Citation 1: JP-A-10-170176

DISCLOSURE OF THE INVENTION

The present invention solves the above-mentioned problems and provides aheat exchange device capable of stably operating with high heat exchangeefficiency and high mass-productivity.

A heat exchange device of the present invention includes a body casehaving a first intake port and a first discharge port for a firstenvironment, and a second intake port and a second discharge port for asecond environment; a first blast fan for the first environment and asecond blast fan for the second environment which are provided in thebody case; and a heat exchanger that performs heat exchange between airof the first environment and air of the second environment in the bodycase. The heat exchanger has a structure in which a second syntheticresin-made plate member is stacked on the surface of a first syntheticresin-made plate member with a predetermined gap therebetween, and athird synthetic resin-made plate member is stacked on the surface of thesecond plate member with a predetermined gap therebetween. A pluralityof first rectification walls that partitions the surface of the firstplate member into a lane shape is formed on the surface of the firstplate member to confront the second plate member, a plurality of secondrectification walls that partitions the surface of the second platemember into a lane shape is formed on the surface of the second platemember to confront the third plate member, and a plurality of thirdrectification walls that partitions the surface of the third platemember into a lane shape is formed on the surface of the third platemember opposite to the second plate member. First protrusions areprovided on parts of the first rectification walls of the first platemember so as to protrude into first recessed portions which are formedon the second rectification walls, confronting the first plate member,of the second plate member, and second protrusions are provided on partsof the second rectification walls of the second plate member so as toprotrude into second recessed portions which are formed on the thirdrectification walls, confronting the second plate member, of the thirdplate member.

With such a configuration, it is possible to decrease air-flowresistance and to thus achieve smooth rectification of the flow of air.Therefore, it is possible to realize a heat exchange device capable ofoperating stably with high heat exchange efficiency and highmass-productivity.

That is to say, in the heat exchange device of the present invention,the plurality of first rectification walls partitioning the surface ofthe first plate member into a lane shape and the plurality of secondrectification walls partitioning the surface of the second plate memberinto a lane shape are provided, respectively. In this way, it ispossible to form a uniform flow of air over approximately the entiresurface of the first plate member and the second plate member by thefirst rectification walls and the second rectification walls and to thusperform smooth rectification of the flow of air.

Furthermore, in the portion where the uniform flow of air is formed, thefirst protrusions are provided in a part of the first rectificationwalls of the first plate member so as to protrude into the firstrecessed portions on the side of the first plate member, and the secondprotrusions are provided in a part of the second rectification walls ofthe second plate member so as to protrude into the second recessedportions on the side of the second plate member. In this way, even whena temperature rise such as increased air temperature occurs, the firstplate member, the second plate member, and the third plate member areprevented from being greatly deformed in the direction towards theiradjacent plate member, whereby the air-flow path on the surfaces of theplate members is prevented from being narrowed or blocked. As a result,it is possible to achieve smooth rectification of the flow of air,decrease the air-flow resistance, and improve the heat exchangeefficiency. Therefore, it is possible to realize a heat exchange devicecapable of operating stably with high heat exchange efficiency.

Moreover, a heat exchange device of the present invention includes abody case having a first intake port and a first discharge port for afirst environment, and a second intake port and a second discharge portfor a second environment; a first blast fan for the first environmentand a second blast fan for the second environment which are provided inthe body case; and a heat exchanger that performs heat exchange betweenair of the first environment and air of the second environment in thebody case. The heat exchanger has a structure in which a secondsynthetic resin-made plate member is stacked on the surface of a firstsynthetic resin-made plate member with a predetermined gap therebetween,and a third synthetic resin-made plate member is stacked on the surfaceof the second plate member with a predetermined gap therebetween. Aplurality of first rectification walls that partitions the surface ofthe first plate member into a lane shape is formed on the surface of thefirst plate member to confront the second plate member, and a pluralityof second rectification walls that partitions the surface of the secondplate member into a lane shape is formed on the surface of the secondplate member to confront the third plate member. First protrusions areprovided between the first plurality of rectification walls on thesurface, confronting the second plate member, of the first plate memberso as to protrude towards the second plate member, and secondprotrusions are provided between the second plurality of rectificationwalls on the surface, confronting the third plate member, of the secondplate member so as to protrude towards the third plate member.

With such a configuration, it is possible to decrease air-flowresistance and to thus achieve smooth rectification of the flow of air.Therefore, it is possible to realize a heat exchange device capable ofoperating stably with high heat exchange efficiency and highmass-productivity.

That is to say, in the heat exchange device of the present invention,the plurality of first rectification walls that partitions the surfaceof the first plate member into a lane shape and the plurality of secondrectification walls that partitions the surface of the second platemember into a lane shape are provided. Moreover, the first protrusionsare provided between the first plural rectification walls so as toprotrude towards the second plate member, and the second protrusions areprovided between the second plurality of rectification walls so as toprotrude towards the third plate member.

In this way, it is possible to form a uniform flow of air overapproximately the entire surface of the first plate member and thesecond plate member by the first rectification walls and the secondrectification walls. Moreover, since the first protrusions and thesecond protrusions are provided in the portion where the uniform flow ofair is formed, even when a situation such as increased air temperatureoccurs, the air-flow path is prevented from being narrowed or blocked.As a result, it is possible to achieve smooth rectification of the flowof air, decrease the air-flow resistance, and improve the heat exchangeefficiency. Therefore, it is possible to realize a heat exchange devicecapable of operating stably with high heat exchange efficiency.

Moreover, a device for accommodating a heat generation body of thepresent invention includes a cabinet for accommodating a heat generationbody and the above-mentioned heat exchange device mounted to an openingof the cabinet.

With such a configuration, it is possible to realize a device foraccommodating a heat generation body, accommodating a heat exchangedevice which is capable of operating stably with high heat exchangeefficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view showing an installation example of a heatexchange device according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of the heat exchange device accordingto Embodiment 1 of the present invention.

FIG. 3 is an exploded perspective view of the heat exchange deviceaccording to Embodiment 1 of the present invention.

FIG. 4 is a perspective view of the heat exchange device according toEmbodiment 1 of the present invention.

FIG. 5A is an exploded perspective view of the heat exchanger of theheat exchange device according to Embodiment 1 of the present invention.

FIG. 5B is a perspective view of the heat exchanger of the heat exchangedevice according to Embodiment 1 of the present invention.

FIG. 6 is a perspective view of the heat exchanger of the heat exchangedevice according to Embodiment 1 of the present invention.

FIG. 7 is a cross-sectional view of the heat exchanger of the heatexchange device, taken along the line A-A of FIG. 5B.

FIG. 8 is a top plan view of the heat exchanger of another heat exchangedevice according to Embodiment 1 of the present invention.

FIG. 9 is an exploded perspective view of the heat exchanger of anotherheat exchange device according to Embodiment 1 of the present invention.

FIG. 10 is a partial enlarged perspective view of the heat exchanger ofanother heat exchange device according to Embodiment 1 of the presentinvention.

FIG. 11 is a partial enlarged perspective view of the heat exchanger ofa still another heat exchange device according to Embodiment 1 of thepresent invention.

FIG. 12 is an exploded perspective view of the heat exchanger of a heatexchange device according to Embodiment 2 of the present invention.

FIG. 13 is a perspective view of the heat exchanger of the heat exchangedevice according to Embodiment 2 of the present invention.

FIG. 14A is a perspective view of a main part of the heat exchanger ofthe heat exchange device according to Embodiment 2 of the presentinvention.

FIG. 14B is an enlarged perspective view of the part surrounded by thebroken line in FIG. 14A.

FIG. 15A is a perspective view of a main part of the heat exchanger ofthe heat exchange device according to Embodiment 2 of the presentinvention.

FIG. 15B is an enlarged perspective view of the part surrounded by thebroken line in FIG. 15A.

DESCRIPTION OF REFERENCE NUMERALS AND SIGNS

-   -   1: BUILDING    -   2: ROOFTOP    -   3: BASE STATION    -   4: DEVICE FOR ACCOMMODATING HEAT GENERATION BODY (CABINET)    -   5: TRANSCEIVER    -   6: HEAT EXCHANGE DEVICE    -   7: FIRST INTAKE PORT    -   8: FIRST DISCHARGE PORT    -   9: SECOND INTAKE PORT    -   10: SECOND DISCHARGE PORT    -   11: BODY CASE    -   12: FIRST BLAST FAN    -   13: SECOND BLAST FAN    -   14, 114: HEAT EXCHANGER    -   15, 115: FIRST PLATE MEMBER    -   15 a, 16 a, 115 a, 116 a: ONE END    -   15 b, 16 b, 115 b, 116 b: THE OTHER END    -   15 c, 115 c: FIRST LONG SIDE    -   16, 116: SECOND PLATE MEMBER    -   16 c, 116 c: SECOND LONG SIDE    -   17, 117: THIRD PLATE MEMBER    -   17 a, 117 a: FOURTH PLATE MEMBER    -   18, 20, 118, 120: INLET PORT    -   19, 21, 119, 121: OUTLET PORT    -   22, 122: FIRST RECTIFICATION WALL    -   23, 123: SECOND RECTIFICATION WALL    -   24: THIRD RECTIFICATION WALL    -   25: FIRST RECESSED PORTION    -   25 a: SECOND RECESSED PORTION    -   25 b: THIRD RECESSED PORTION    -   26, 124: FIRST PROTRUSION    -   27, 125: SECOND PROTRUSION    -   28, 126: FIRST CURVED PORTION    -   29, 127: SECOND CURVED PORTION    -   30: FIRST SEALING PROTRUSION    -   30 a: SECOND SEALING PROTRUSION    -   128: CURVED FACE

PREFERRED EMBODIMENTS FOR CARRYING OUT THE INVENTION

Hereinafter, exemplary embodiments of the present invention will bedescribed with reference to the drawings. In the drawings below, thesame elements are denoted by the same reference numerals, anddescription thereof may sometimes be omitted.

Embodiment 1

FIG. 1 is a perspective view showing an installation example of a heatexchange device according to Embodiment 1 of the present invention.

As shown in FIG. 1, base station 3 of cellular phones is installed onrooftop 2 of building 1. Base station 3 includes box-like cabinet 4which is a device for accommodating a heat generation body, transceiver5 provided in cabinet 4, and heat exchange device 6 which is provided toan opening of the front surface of cabinet 4 so as to be openable like adoor. Transceiver 5 incorporates therein electronic equipment such as atransmitter or a receiver.

FIG. 2 is a cross-sectional view of the heat exchange device accordingto Embodiment 1 of the present invention. FIG. 3 is an explodedperspective view of the heat exchange device according to Embodiment 1of the present invention. FIG. 4 is a perspective view of the heatexchange device according to Embodiment 1 of the present invention.

As shown in FIGS. 2 to 4, heat exchange device 6 is provided with bodycase 11, first blast fan 12 for outside air (hereinafter referred to as“first environment”) and second blast fan 13 for air inside cabinet 4(hereinafter referred to as “second environment”) which are provided inbody case 11, and heat exchanger 14. Here, body case 11 has first intakeport 7 and first discharge port 8 for the first environment and secondintake port 9 and second discharge port 10 for the second environment.Heat exchanger 14 performs heat exchange in body case 11 between theoutside air and the air inside cabinet 4.

FIG. 5A is an exploded perspective view of the heat exchanger of theheat exchange device according to Embodiment 1 of the present invention.FIG. 5B is a perspective view of the heat exchanger of the heat exchangedevice according to Embodiment 1 of the present invention. FIG. 6 is aperspective view of the heat exchanger of the heat exchange deviceaccording to Embodiment 1 of the present invention.

As shown in FIGS. 5A, 5B, and 6, heat exchanger 14 has a structure, forexample, in which second synthetic resin-made plate member 16 is stackedon the surface of first synthetic resin-made plate member 15 with apredetermined gap therebetween, and third synthetic resin-made platemember 17 is stacked on the surface of second plate member 16 with apredetermined gap therebetween, as shown in FIG. 6. Here, plate members15, 16, and 17 are made from synthetic resin due to its good moldabilityand high mass-productivity, and other similar materials having the sameproperties may be used. Moreover, plate members 15, 16, and 17 have arectangular shape in this example. In FIG. 5A, although three platemembers 15, 16, and 17 are stacked, a plurality of plate members may bestacked, for example, by stacking additional fourth plate member 17 aand the like above third plate member 17. A perspective view of heatexchanger 14 obtained by stacking the plurality of plate members shownin FIG. 5A to be integrated therewith is shown in FIG. 5B.

The top surface (in FIG. 6) of heat exchanger 14 stacked thus serves asinlet 18 in which the air inside cabinet 4 is drawn via second intakeport 9. The air drawn from inlet port 18 into heat exchanger 14 isdischarged into cabinet 4 via outlet port 19 which is provided on theright side of the lower part in FIG. 6. The discharged air is used forcooling down transceiver 5 which is disposed opposite heat exchanger 14shown in FIG. 1.

The outside air from the outside of cabinet 4 is drawn from inlet port20, which is provided on the lower surface in FIG. 6, and is dischargedas outside air to the outside of cabinet 4 via outlet port 21 which isprovided on the left side of the upper part.

Although such a ventilation will be described in further detail later,heat exchanger 14 performs heat exchange between the outside air and theinside air of cabinet 4, thus cooling down transceiver 5 using theoutside air.

That is to say, since electric current of several tens of amperes ormore flows through transceiver 5, transceiver 5 generates heat byconsuming this electric current and the temperature thereof will riseaccordingly. When such a temperature rise resulting from the heatgenerated from transceiver 5 itself is left as it is, thecharacteristics of the electronic equipment or the like provided intransceiver 5 may become unstable. Therefore, as described above,Embodiment 1 has a structure in which heat exchanger 14 performs heatexchange between the outside air and the air flowing inside cabinet 4 tocool down the inside air, thus cooling down and suppressing heatgeneration of transceiver 5, and preventing the operation of transceiver5 from becoming unstable.

Heat exchanger 14 described above is obtained by sequentially stackingsecond rectangular synthetic resin-made plate member 16 on the surfaceof first rectangular synthetic resin-made plate member 15 and thirdsynthetic resin-made plate member 17 on the surface of second platemember 16 as shown in FIG. 5A.

More specifically, a plurality of first rectification walls 22 thatpartitions the surface of first plate member 15 into a lane shape isprovided on the surface of first plate member 15 to confront the secondplate member 16. Moreover, a plurality of second rectification walls 23that partitions the surface of second plate member 16 into a lane shapeis provided on the surface of second plate member 16 to confront thethird plate member 17. Furthermore, third rectification walls 24 thatprotrude towards a side opposite to second plate member 16 are providedon the surface of third plate member 17.

FIG. 7 is a cross-sectional view of heat exchanger 14 of the heatexchange device, taken along the line A-A of FIG. 5B. As shown in FIG.7, first protrusions 26 are provided on a part of first rectificationwalls 22 of first plate member 15 so as to protrude into first recessedportions 25 formed on the lower surface side of second plate member 16close to first plate member 15 when second rectification walls 23 areformed in second plate member 16. Moreover, second protrusions 27 areprovided on a part of second rectification walls 23 of second platemember 16 so as to protrude into second recessed portions 25 a which areformed on the lower surface side of third plate member 17 close tosecond plate member 16 when third rectification walls 24 are formed inthird plate member 17.

As understood from the structures shown in FIGS. 5A, 5B, and 6, platemembers 15, 16, and 17 have a vertically rectangular shape, and firstplate member 15 has first rectification walls 22 which extend in astraight line from one end thereof 15 a (the lower end) towards theother end 15 b (the upper end). Moreover, first rectification walls 22have a curved shape that is curved in front of the other end 15 btowards first long side 15 c which is on the left side in FIG. 5A,whereby portions of first rectification walls 22 corresponding to firstlong side 15 c serve as outlet port 21.

Moreover, second plate member 16 has second rectification walls 23 whichextend in a straight line from the other end 16 b (the upper end)towards one end thereof 16 a (the lower end). Second rectification walls23 have a curved shape that is curved in front of one end 16 a towardssecond long side 16 c which is on the right side in FIG. 5A, wherebyportions of second rectification walls 23 corresponding to second longside 16 c serve as outlet port 19.

Furthermore, subsequently, although third plate member and fourth platemember 17 a are similarly stacked alternately, description thereof willbe provided briefly in order to avoid redundant description. It shouldbe noted that third plate member 17 may be the same as that used asfirst plate member 15, and fourth plate member 17 a stacked subsequentlyon third plate member 17 may be the same as that used as second platemember 16.

In addition, as shown in FIG. 5A, first curved portion 28, which isprovided to first plate member 15 so as to be curved towards first longside 15 c, and second curved portion 29, which is provided to secondplate member 16 so as to be curved towards second long side 16 c, areconfigured to increase the gap between first rectification walls 22 andthe gap between second rectification walls 23, respectively, thuspreventing any possible increase in air-flow resistance.

That is to say, when first rectification walls 22 or secondrectification walls 23 are formed in first curved portion 28 or secondcurved portion 29 of first plate member 15 or second plate member 16with the same density as on first long side 15 c or second long side 16c, the air-flow path will be curved and the air-flow resistance willincrease.

In order to prevent this, in first curved portion 28, the gap, namelythe distance, between the adjacent ones of first rectification walls 22is set to be larger than that in the straight-line portion of firstrectification wall 22.

Moreover, in second curved portion 29, the gap, namely the distance,between the adjacent ones of second rectification walls 23 is set to belarger than that in the straight-line portion of second rectificationwalls 23.

When observing second curved portion 29 of second plate member 16, firstrectification walls 22 and third rectification walls 24 which areperpendicular to second curved portion 29 are formed on portions offirst plate member 15 and third plate member 17 disposed adjacent tosecond curved portion 29. Therefore, even when the gap between theadjacent ones of second rectification walls 23 in second curved portion29 is increased, the adjacent wall surfaces of first plate member 15 orthird plate member 17 will not protrude due to thermal expansion.

However, in Embodiment 1, a curved face which is substantiallyperpendicular to the straight-line portion of second rectification walls23 is formed on a portion of first plate member 15 corresponding tofirst curved portion 28. Moreover, a curved face which is substantiallyperpendicular to the straight-line portions of first rectification walls22 and third rectification walls 24 is formed on a portion of secondplate member 16 corresponding to second curved portion 29. Althoughthese curved faces are not shown in the drawings to avoid complication,first plate member 15 itself corresponding to first curved portion 28and second plate member 16 itself corresponding to second curved portion29 are curved into a gently protruding circular-arc shape, that is, aso-called barrel shape.

According to the configuration described above, the air heated bytransceiver 5 in cabinet 4 is pulled into second blast fan 13 fromsecond intake port 9 of heat exchange device 6 in the directionindicated by the arrow in FIG. 2. The heated air is drawn into heatexchanger 14 from inlet port 18 shown in FIGS. 5A and 6. Then, the airpasses between second plate member 16 and third plate member 17,becoming cool air which is supplied back to the inside of cabinet 4 fromoutlet port 19, whereby transceiver 5 is cooled down by the cool air.

On the other hand, as indicated by the broken-line arrow in FIG. 2, theoutside air is pulled into first blast fan 12 from first intake port 7and drawn into heat exchanger 14 from inlet port 20 shown in FIGS. 5Aand 6. Then, the air passes between first plate member 15 and secondplate member 16 and is discharged to the outside of cabinet 4 fromoutlet port 21 via first discharge port 8.

The outside air passing between first plate member 15 and second platemember 16 and the air inside cabinet 4 passing between second platemember 16 and third plate member 17 are uniformly dispersed overapproximately the entire surfaces of plate members 15, 16, and 17 byfirst rectification walls 22 or second rectification walls 23 which areprovided on first plate member 15 or second plate member 16. With such aconfiguration, heat exchange between the outside air and the air insidecabinet 4 can be realized by the entire surface area of plate members15, 16, and 17.

However, during this heat exchange, if the outside air temperature isextremely high, for example, the internal temperature of cabinet 4 willrise too high, and as a consequence, plate members 15, 16, and 17 willbe thermally expanded. Thus, portions sandwiched between firstrectification walls 22 or portions sandwiched between secondrectification walls 23 may protrude into either one of plate members 15,16, and 17 adjacent thereto. Therefore, there is a concern in that theair-flow path is narrowed or blocked.

Therefore, as described above, in Embodiment 1, as shown in FIG. 7,first protrusions 26 are provided on parts of first rectification walls22 of first plate member 15 so as to protrude into first recessedportions 25, which are formed on the lower surface side of second platemember 16 close to first plate member 15 when second rectification walls23 are formed in second plate member 16, and to make abutting contactwith the inner top surfaces of first recessed portions 25 close to firstplate member 15.

Moreover, second protrusions 27 are provided on parts of secondrectification walls 23 of second plate member 16 so as to protrude intosecond recessed portions 25 a, which are formed on the lower surfaceside of third plate member 17 close to second plate member 16 when thirdrectification walls 24 are formed in third plate member 17, and to makeabutting contact with the inner top surfaces of second recessed portions25 a close to second plate member 16.

For this reason, even when such a high temperature state as describedabove occurs and thus at least any one of plate members 15, 16, and 17is thermally expanded, first protrusions 26 of first plate member 15supports second plate member 16 disposed on an upper side thereof bymaking abutting contact with first recessed portions 25 of second platemember 16 close to first plate member 15. Moreover, second protrusions27 of second plate member 16 supports third plate member 17 disposed onan upper side thereof by making abutting contact with second recessedportions 25 a of third plate member 17 close to second plate member 16.In this way, the portions sandwiched between first rectification walls22 or the portions sandwiched between second rectification walls 23 areprevented from protruding into plate members 15, 16, and 17 adjacentthereto, thus preventing the air-flow path from being narrowed orblocked. Therefore, it is possible to realize a heat exchange devicecapable of operating while maintaining high heat exchange efficiency.

FIG. 8 is a top plan view of the heat exchanger of another heat exchangedevice according to Embodiment 1 of the present invention. FIG. 9 is anexploded perspective view of the heat exchanger of another heat exchangedevice according to Embodiment 1 of the present invention. FIG. 10 is apartial enlarged perspective view of the heat exchanger of another heatexchange device according to Embodiment 1 of the present invention.

Differently from the heat exchanger described with reference to FIGS. 5to 7, heat exchanger 14 shown in FIG. 8 prevents formation of a shortcutin the direction indicated by the arrows in the curved portion of therectification walls.

That is to say, in the first curved portion of first rectification wall22 of first plate member 15 shown in FIG. 10, second rectification wall23 of second plate member 16 is perpendicular to first rectificationwall 22. In this case, since first recessed portion 25 is formed on theside of first plate member 15 when second rectification wall 23 isformed, air passes through first recessed portion 25 close to firstplate member 15, whereby a shortcut is formed in the first curvedportion.

That is to say, a flow of air that takes a shortcut between inlet port18 of heat exchanger 14 shown in FIG. 6 and outlet port 19 is formed,and a flow of air that takes a shortcut between inlet port 20 and outletport 21 is formed.

Therefore, in Embodiment 1 shown in FIGS. 9 and 10, first sealingprotrusions 30 are provided in portions of first curved portion 28 offirst rectification walls 22 of first plate member 15 beingperpendicular to the straight-line portion of second rectification walls23 of second plate member 16 adjacent to first curved portion 28 so asto protrude into first recessed portions 25 which are formed on secondplate member 16 close to first plate member 15 when second rectificationwalls 23 are formed on second plate member 16.

Moreover, second sealing protrusions 30 a are provided in portions ofthe straight-line portion of second rectification walls 23 of secondplate member 16 being perpendicular to second curved portion 29 (notshown) of third rectification walls 24 of third plate member 17 adjacentto the straight-line portion so as to protrude into second recessedportions 25 a which are formed on third plate member 17 close to secondplate member 16 when third rectification walls 24 are formed on thirdplate member 17.

As shown in FIG. 10, first sealing protrusions 30 have such a shape thatthe diameter thereof decreases as it extends from first plate member 15towards second plate member 16. Similarly, second sealing protrusions 30a have such a shape that the diameter thereof decreases as it extendsfrom second plate member 16 towards third plate member 17. Moreover,first recessed portions 25 which are formed on the side of first platemember 15 when second rectification walls 23 are formed on second platemember 16 have such a shape that the diameter on the side of first platemember 15 is larger than that on the side of second plate member 16.Similarly, second recessed portions 25 a which are formed on the side ofsecond plate member 16 when third rectification walls 24 are formed onthird plate member 17 have such a shape that the diameter on the side ofsecond plate member 16 is larger than that on the side of third platemember 17.

For this reason, as understood from FIG. 10, first sealing protrusions30 protruding into second recessed portions 25 a are formed in portionsof the curved portion of first rectification walls 22 of first platemember 15 being perpendicular to the straight-line portion of secondrectification walls 23 of second plate member 16 adjacent thereto, andwhich are formed on second plate member 16 close to first plate member15 when second rectification walls 23 are formed on second plate member16, whereby a state where so-called caps are formed is achieved.

Moreover, similarly, a state is achieved where third recessed portions25 b which are formed in portions of the curved portion of thirdrectification walls 24 of third plate member 17 close to second platemember 16 become caps at second sealing protrusions 30 a.

For this reason, it is possible to prevent formation of a shortcut inthe flow of air appearing in the direction indicated by the arrows inFIG. 8 in the curved portions of first rectification walls 22, secondrectification walls 23, and third rectification walls 24. As a result,it is possible to prevent decrease in heat exchange efficiency of heatexchanger 14.

FIG. 11 is a partial enlarged perspective view of the heat exchanger ofa still another heat exchange device according to Embodiment 1 of thepresent invention.

The still another embodiment shown in FIG. 11 prevents formation of ashortcut in the straight-line portion of first rectification walls 22 offirst plate member 15 and second rectification walls 23 of second platemember 16, for example.

To achieve this, as shown in FIG. 11, both sides of second rectificationwalls 23 of second plate member 16 coming in close contact with firstrectification walls 22 of first plate member 15 have such a shape thatboth the sides are depressed towards first plate member 15. Similarly,both sides of third rectification walls 24 of third plate member 17coming in close contact with second rectification walls 23 of secondplate member 16 have such a shape that both the sides are depressedtowards second plate member 16. With such a configuration, it ispossible to eliminate the gaps between first rectification walls 22 andsecond plate member 16 and the gaps between second rectification walls23 and third plate member 17, thus preventing formation of a shortcut inthe flow of air.

In Embodiment 1, in portions where the straight-line portion of firstrectification walls 22 of first plate member 15 overlaps vertically withfirst recessed portions 25 of second plate member 16 close to the firstplate member, gaps are formed between first rectification walls 22 andfirst recessed portions 25 on the side the first plate member, and thus,a shortcut in the flow of air can occur easily. However, by increasingthe size of first protrusions 26 as much as possible, it is possible toblock the gaps between first rectification walls 22 and first recessedportions 25 on the side of the first plate member, thus preventingformation of a shortcut in the flow of air and improving the heatexchange efficiency of heat exchanger 14.

Moreover, although not shown in the drawings, in portions where thestraight-line portion of first rectification walls 22 overlapsvertically with the straight-line portion of second rectification walls23, first rectification walls 22 enter into first recessed portions 25on the side of first plate member 15, and second rectification walls 23enter into second recessed portions 25 a on the side of second platemember 16. In this way, it is possible to eliminate the gaps betweenfirst rectification walls 22 and second plate member 16 and the gapsbetween second rectification walls 23 and third plate member 17, thuspreventing formation of a shortcut in the flow of air and improving theheat exchange efficiency of heat exchanger 14.

That is to say, the heat exchange device of the present inventionincludes a body case having a first intake port and a first dischargeport for a first environment and a second intake port and a seconddischarge port for a second environment; a first blast fan for the firstenvironment and a second blast fan for the second environment which areprovided in the body case; and a heat exchanger that performs heatexchange between air of the first environment and air of the secondenvironment in the body case. The heat exchanger has a structure inwhich a second synthetic resin-made plate member is stacked on thesurface of a first synthetic resin-made plate member with apredetermined gap therebetween, and a third synthetic resin-made platemember is stacked on the surface of the second plate member with apredetermined gap therebetween. A plurality of first rectification wallsthat partitions the surface of the first plate member into a lane shapeis formed on the surface, confronting the second plate member, of thefirst plate member, a plurality of second rectification walls thatpartitions the surface of the second plate member into a lane shape isformed on the surface, confronting the second plate member, of thesecond plate member, and a plurality of third rectification walls thatpartitions the surface of the third plate member into a lane shape isformed on the surface, opposite to the second plate member, of the thirdplate member. First protrusions are provided on parts of the firstrectification walls of the first plate member so as to protrude intofirst recessed portions which are formed on the second rectificationwalls, confronting the first plate member, of the second plate member,and second protrusions are provided on parts of the second rectificationwalls of the second plate member so as to protrude into second recessedportions which are formed on the third rectification walls, confrontingthe second plate member, of the third plate member.

With such a configuration, it is possible to decrease air-flowresistance and to thus achieve smooth rectification of the flow of air.Therefore, it is possible to realize a heat exchange device capable ofoperating stably with high heat exchange efficiency and highmass-productivity.

That is to say, in the heat exchange device of the present invention,the plurality of first rectification walls partitioning the surface ofthe first plate member into a lane shape and the plurality of secondrectification walls partitioning the surface of the second plate memberinto a lane shape are provided, respectively. In this way, it ispossible to form a uniform flow of air over approximately the entiresurface of the first plate member and the second plate member by thefirst rectification walls and the second rectification walls and to thusperform smooth rectification of the flow of air.

Furthermore, in the portion where the uniform flow of air is formed, thefirst protrusions are provided in parts of the first rectification wallsof the first plate member so as to protrude into the first recessedportions on the first plate member, and the second protrusions areprovided in parts of the second rectification walls of the second platemember so as to protrude into the second recessed portions on the secondplate member. In this way, even when a temperature rise such asincreased air temperature occurs, the first plate member, the secondplate member, and the third plate member are prevented from beinggreatly deformed in the direction towards their adjacent plate member,whereby the air-flow path on the surfaces of the plate members isprevented from being narrowed or blocked. As a result, it is possible toachieve smooth rectification of the flow of air, decrease the air-flowresistance, and improve the heat exchange efficiency. Therefore, it ispossible to realize a heat exchange device capable of operating stablywith high heat exchange efficiency.

Even if the external state is changed and thus a situation such asincreased air temperature occurs, according to the heat exchange deviceof the present invention, the first plate member, the second platemember, and the third plate member are prevented from being greatlydeformed in the direction towards their adjacent plate member, wherebythe air-flow path on the surfaces of the plate members is prevented frombeing narrowed or blocked. As a result, it is possible to improve theheat exchange efficiency.

Moreover, in the protrusions provided in parts of the rectificationwalls, the first protrusions protrude into the first recessed portionson the second plate member, and the second protrusions protrude into thesecond recessed portions on the side of the third plate member, wherebythe stacking position of the first plate member relative to the secondplate member and the stacking position of the second plate memberrelative to the third plate member are determined. In addition, sincethe protrusions secure the gap between the respective plate members, itis possible to obtain an advantage that the air-flow path in the heatexchanger is prevented from being narrowed or blocked.

Moreover, by using the heat exchange device described in Embodiment 1,it is possible to form a device for accommodating a heat generation bodywhich includes the heat exchange device and a cabinet for accommodatingthe heat generation body as shown in FIG. 1, and in which the heatexchange device is mounted on an opening of the cabinet.

With such a configuration, it is possible to realize a device foraccommodating a heat generation body, accommodating a heat exchangedevice which is capable of operating stably with high heat exchangeefficiency. Since the heat exchange efficiency is high, it is possibleto achieve further miniaturization than that of the conventional one.Thus, it is possible to obtain an advantage that the selection range ofplaces where it is to be installed in a building or the like can bebroadened.

Embodiment 2

Similar to Embodiment 1, FIGS. 1 to 3 show a heat exchange deviceaccording to Embodiment 2 of the present invention. That is, FIG. 1 is aperspective view showing an installation example of the heat exchangedevice, FIG. 2 is a cross-sectional view of the heat exchange device,and FIG. 3 is an exploded perspective view of the heat exchange device.

Description of FIGS. 1 to 3 is the same as that described in Embodiment1 and will be omitted herein.

FIG. 12 is an exploded perspective view of the heat exchanger of a heatexchange device according to Embodiment 2 of the present invention. FIG.13 is a perspective view of the heat exchanger of the heat exchangedevice according to Embodiment 2 of the present invention.

As shown in FIGS. 12 and 13, heat exchanger 114 has a structure, forexample, in which second synthetic resin-made plate member 116 isstacked on the surface of first synthetic resin-made plate member 115with a predetermined gap therebetween, and third synthetic resin-madeplate member 117 is stacked on the surface of second plate member 116with a predetermined gap therebetween, as shown in FIG. 13. Here, platemembers 115, 116, and 117 are made from synthetic resin due to its goodmoldability and high mass-productivity, and other similar materialshaving the same properties may be used. Moreover, plate members 115,116, and 117 have a rectangular shape. In FIG. 12, although three platemembers 115, 116, and 117 are stacked, a plurality of plate members maybe stacked, for example, by stacking additional fourth plate member 117a and the like above third plate member 117.

The top surface (in FIG. 13) of heat exchanger 114 thus stacked servesas inlet 118 in which the air inside cabinet 4 shown in FIGS. 1 and 13is drawn via second intake port 9. The air drawn from inlet port 118into heat exchanger 114 is subsequently discharged into cabinet 4 viaoutlet port 119 which is provided on the right side of the lower part inFIG. 13.

The outside air from the outside of cabinet 4 is drawn from inlet port120, which is provided on the lower surface in FIG. 13, and isdischarged to the outside of cabinet 4 via outlet port 121 which isprovided on the left side of the upper part.

Although such a ventilation of the outside air will be described infurther detail later, heat exchanger 114 performs cooling of transceiver5 shown in FIG. 1. That is to say, since electric current of severaltens of amperes or more flows through transceiver 5, there is a casewhere transceiver 5 itself generates heat and the temperature thereofrises. When such a temperature rise in transceiver 5 is left as it is,the characteristics thereof may become unstable. Therefore, as describedabove, similar to Embodiment 1, Embodiment 2 has a structure in whichheat exchanger 114 performs heat exchange between the outside air andthe air flowing inside cabinet 4 to cool down the inside air, thuscooling down and suppressing heat generation of transceiver 5, andpreventing the operation of transceiver 5 from becoming unstable.

Heat exchanger 114 described above is obtained by stacking secondrectangular synthetic resin-made plate member 116 on the surface offirst rectangular synthetic resin-made plate member 115 and thirdsynthetic resin-made plate member 117 on the surface of second platemember 116 as shown in FIG. 12.

More specifically, a plurality of first rectification walls 122 thatpartitions the surface of first plate member 115 into a lane shape isprovided on the surface of first plate member 115 close to second platemember 116. Moreover, a plurality of second rectification walls 123 thatpartitions the surface of second plate member 116 into a lane shape isprovided on the surface of second plate member 116 close to third platemember 117. Furthermore, third plate member 117 is provided withrectification walls for a plate member on the right side in FIG. 12.

FIG. 14A is a perspective view of a main part of the heat exchanger ofthe heat exchange device according to Embodiment 2 of the presentinvention. FIG. 14B is an enlarged perspective view of the partsurrounded by the broken line in FIG. 14A. FIG. 15A is a perspectiveview of a main part of the heat exchanger of the heat exchange deviceaccording to Embodiment 2 of the present invention. FIG. 15B is anenlarged perspective view of the part surrounded by the broken line inFIG. 15A.

As shown in FIGS. 12, 14A, and 14B, first protrusions 124 are providedbetween first plural rectification walls 122 on the surface of firstplate member 115 close to second plate member 116 so as to protrudetowards second plate member 116. Moreover, second protrusions 125 areprovided between second plural rectification walls 123 on the surface ofsecond plate member 116 close to third plate member 117 so as toprotrude towards third plate member 117.

Plate members 115, 116, and 117 have a vertically rectangular shape, andfirst plate member 115 has first rectification walls 122 which extendfrom a first end thereof 115 a (the lower end) towards a second end 115b (the upper end). Moreover, first rectification walls 122 have a curvedshape that is curved in front of the upper end towards first long side115 c which is on the left side in FIG. 12, whereby portions of firstrectification walls 122 corresponding to first long side 115 c serve asoutlet port 121.

Moreover, second plate member 116 has second rectification walls 123which extend from a second end 116 b (the upper end) towards a first endthereof 116 a (the lower end). Second rectification walls 123 have acurved shape that is curved in front of the lower end towards secondlong side 116 c which is on the right side in FIG. 12, whereby portionsof second rectification walls 123 corresponding to second long side 116c serve as outlet port 119.

Furthermore, subsequently, although third plate member 117 and fourthplate member 117 a are similarly stacked alternately, descriptionthereof will be provided briefly in order to avoid redundantdescription. It should be noted that third plate member 117 may be thesame as that used as first plate member 115, and fourth plate member 117a stacked subsequently on third plate member 117 may be the same as thatused as second plate member 116.

In addition, as shown in FIGS. 15A and 15B, first curved portion 126,which is provided to first plate member 115 so as to be curved towardsfirst long side 115 c, and second curved portion 127, which is providedto second plate member 116 so as to be curved towards the second longside, are configured as portions where first protrusions 124 or secondprotrusions 125 are not formed. Moreover, as shown in FIG. 15B, curvedsurface 128 which is substantially perpendicular to first rectificationwalls 122 or second rectification walls 123 is formed on the portionswhere first protrusions 124 or second protrusions 125 are not formed.

According to the configuration described above, the air heated bytransceiver 5 in cabinet 4 (FIG. 1) is pulled into second blast fan 13from second intake port 9 of heat exchange device 6 in the directionindicated by the arrow in FIG. 2. The heated air is drawn into heatexchanger 114 from inlet port 118 shown in FIGS. 13 to 15. Then, the airpasses between second plate member 116 and third plate member 117,becoming cool air which is supplied back to the inside of cabinet 4(FIG. 1) via outlet port 119 and second discharge port 10 (FIG. 2),whereby transceiver 5 is cooled down.

On the other hand, as shown in FIG. 2, the outside air is pulled intofirst blast fan 12 from first intake port 7. Then, the air is drawn intoheat exchanger 114 from inlet port 120 as shown in FIGS. 13 to 15,passes between first plate member 115 and second plate member 116, andis discharged to the outside of cabinet 4 (FIG. 1) via outlet port 121and first discharge port 8 (FIG. 2).

The outside air passing between first plate member 115 and second platemember 116 and the air inside cabinet 4 passing between second platemember 116 and third plate member 117 are uniformly dispersed overapproximately the entire surfaces of plate members 115, 116, and 117 byfirst rectification walls 122 and second rectification walls 123,respectively, which are provided on first plate member 115 and secondplate member 116. Therefore, the heat exchange device of Embodiment 2 isable to perform heat exchange between the outside air and the air insidethe cabinet by using a large area and to thus operate stably with highheat exchange efficiency.

However, during this heat exchange, if the outside air temperature isextremely high, for example, there is a case where the internaltemperature of cabinet 4 may rise too high. In such a case, platemembers 115, 116, and 117 may be thermally expanded as a result of thetemperature rise, and portions sandwiched between first rectificationwalls 122 or portions sandwiched between second rectification walls 123may protrude into plate members 115, 116, and 117 adjacent thereto.Therefore, there is a concern in that the air-flow path is narrowed orblocked.

However, as described above, in Embodiment 2, first protrusions 124 orsecond protrusions 125 are provided on the portions sandwiched betweenfirst rectification walls 122 or portions sandwiched between secondrectification walls 123. Therefore, even when such a high temperaturestate as described above occurs, the portions sandwiched between firstrectification walls 122 or the portions sandwiched between secondrectification walls 123 protrude into plate members 115, 116, and 117adjacent thereto. In this way, it is possible to prevent the air-flowpath from being narrowed or blocked and to maintain high heat exchangeefficiency.

As described above, as shown in FIGS. 15A and 15B, curved face 128 whichis substantially perpendicular to first rectification walls 122 orsecond rectification walls 123 is provided on the non-formation portionof first plate member 115 or second plate member 116 where firstprotrusions 124 or second protrusions 125 are not formed. Curved face128 is provided so as to prevent any possible increase in air-flowresistance when air passes therethrough. That is to say, if protrusions124 and 125 are provided on the non-formation portion where firstprotrusions 124 or second protrusions 125 are not formed, there will bea considerable increase in the air-flow resistance.

As understood when observing the non-formation portion of second platemember 116, first protrusions 124 are formed on portions of first platemember 115 disposed adjacent to this non-formation portion and portionsof third plate member 117 opposing this non-formation portion.Therefore, even if second protrusions 125 are not provided on thenon-formation portion of second plate member 116, the adjacent wallsurfaces will not protrude due to thermal expansion. However, in orderto prevent or alleviate the protruding of the wall surfaces further, itmay be preferable to provide curved surface 128 on this non-formationportion as described above.

That is to say, the heat exchange device of the present inventionincludes a body case having a first intake port and a first dischargeport for a first environment, and a second intake port and a seconddischarge port for a second environment; a first blast fan for the firstenvironment and a second blast fan for the second environment which areprovided in the body case; and a heat exchanger that performs heatexchange between air of the first environment and air of the secondenvironment in the body case. The heat exchanger has a structure inwhich a second synthetic resin-made plate member is stacked on thesurface of a first synthetic resin-made plate member with apredetermined gap therebetween, and a third synthetic resin-made platemember is stacked on the surface of the second plate member with apredetermined gap therebetween. A plurality of first rectification wallsthat partitions the surface of the first plate member into a lane shapeis formed on the surface, confronting the second plate member, of thefirst plate member, and a plurality of second rectification walls thatpartitions the surface of the second plate member into a lane shape isformed on the surface, confronting the second plate member, of thesecond plate member. First protrusions are provided between the firstplurality of rectification walls on the surface, confronting the secondplate member, of the first plate member so as to protrude towards thesecond plate member, and second protrusions are provided between thesecond plurality of rectification walls on the surface, confronting thesecond plate member, of the second plate member so as to protrudetowards the third plate member.

With such a configuration, it is possible to decrease air-flowresistance and to thus achieve smooth rectification of the flow of air.Therefore, it is possible to realize a heat exchange device capable ofoperating stably with high heat exchange efficiency and highmass-productivity.

That is to say, in the heat exchange device of the present invention,the plurality of first rectification walls that partitions the surfaceof the first plate member into a lane shape and the plurality of secondrectification walls that partitions the surface of the second platemember into a lane shape are provided. Moreover, the first protrusionsare provided between the first plural rectification walls so as toprotrude towards the second plate member, and the second protrusions areprovided between the second plural rectification walls so as to protrudetowards the third plate member.

In this way, it is possible to form a uniform flow of air overapproximately the entire surface of the first plate member and thesecond plate member by the first rectification walls and the secondrectification walls. Moreover, since the first protrusions and thesecond protrusions are provided in the portion where the uniform flow ofair is formed, even when a situation such as increased air temperatureoccurs, the air-flow path is prevented from being narrowed or blocked.As a result, it is possible to achieve smooth rectification of the flowof air, decrease the air-flow resistance, and improve the heat exchangeefficiency. Therefore, it is possible to realize a heat exchange devicecapable of operating stably with high heat exchange efficiency.

Moreover, by using the heat exchange device described in Embodiment 2,it is possible to form a device for accommodating a heat generation bodywhich includes the heat exchange device and a cabinet for accommodatingthe heat generation body as shown in FIG. 1, and in which the heatexchange device is mounted on an opening of the cabinet.

With such a configuration, it is possible to realize a device foraccommodating a heat generation body, accommodating a heat exchangedevice which is capable of operating stably with high heat exchangeefficiency. Since the heat exchange efficiency is high, it is possibleto achieve further miniaturization than in a conventional heat exchangedevice. Thus, it is possible to obtain an advantage that the selectionrange of places where it may be installed in a building or the like canbe broadened.

INDUSTRIAL APPLICABILITY

The heat exchange device of the present invention can operate stablywith high heat exchange efficiency and high mass-productivity.Therefore, the heat exchange device can be extremely useful as a coolingdevice used in facilities of a base station of communication devicesincluding cellular phones and other outdoor facilities.

1. A heat exchange device comprising: a body case having a first intakeport and a first discharge port for a first environment, and a secondintake port and a second discharge port for a second environment; afirst blast fan for the first environment and a second blast fan for thesecond environment which are provided in the body case; and a heatexchanger that performs heat exchange between air of the firstenvironment and air of the second environment in the body case, whereinthe heat exchanger has a structure in which a second syntheticresin-made plate member is stacked on the surface of a first syntheticresin-made plate member with a predetermined gap therebetween, and athird synthetic resin-made plate member is stacked on the surface of thesecond plate member with a predetermined gap therebetween, wherein aplurality of first rectification walls that partitions the surface ofthe first plate member into a lane shape is formed on the surface,confronting the second plate member, wherein a plurality of secondrectification walls that partitions the surface of the second platemember into a lane shape is formed on the surface, confronting the thirdplate member, wherein a plurality of third rectification walls thatpartitions the surface of the third plate member into a lane shape isformed on the surface, opposite to the second plate member, wherein thefirst rectification walls of the first plate member include: firststraight-line portions which extend along a first long side from a firstend thereof towards a second end; and first curved portions includingfirst arc-like portions bended from the first straight-line portionstoward the first long side, and first extending portions extending fromthe first arc-like portions to the first long side, wherein the secondrectification walls of the second plate member include: secondstraight-line portions which extend along a second long side from afirst end thereof towards a second end; and second curved portionsincluding second arc-like portions which are bended from the secondstraight-line portions toward the second long side, and second extendingportions extending from the second arc-like portions to the second longside, wherein a distance between the adjacent first rectification wallsin the first extending portions is larger than the distance between thefirst rectification walls in the first straight-line portions, wherein adistance between the adjacent second rectification walls in the secondextending portions is larger than the distance between the secondrectification walls in the second straight-line portions, wherein afirst curved face which is perpendicular to the second straight-lineportions of the second rectification walls of the second plate member isprovided on the first curved portions of the first plate member beingcurved towards the first long side, and wherein a second curved facewhich is perpendicular to the first straight-line portions of the firstrectification walls is provided on the second curved portions of thesecond plate member being curved towards the second long side.
 2. Theheat exchange device of claim 1, wherein the first curved face is formedby processing the first plate member itself, and the second curved faceis formed by processing the second plate member itself.
 3. The heatexchange device of claim 2, wherein the first curved face is formed byprocessing the first plate member itself into a protruding circular-arcshape, and wherein the second curved face is formed by processing thesecond plate member itself into a gently protruding circular-arc shape.4. The heat exchange device of claim 1, wherein first sealingprotrusions are provided in sections of the first curved portions of thefirst rectification walls of the first plate member, which sections areperpendicular to the second straight-line portions of the secondrectification walls, so as to protrude into first recessed portions onthe first plate member, and wherein second sealing protrusions areprovided in sections of the second straight-line portions of the secondrectification walls of the second plate member, which sections areperpendicular to third curved portions of the third rectification wallsof the third plate member adjacent to the second straight-line portions,so as to protrude into second recessed portions on the second platemember.
 5. The heat exchange device of claim 4, wherein the firstsealing protrusions have such a shape that a diameter thereof decreasesas each one of the protrusions extends from the first plate membertowards the second plate member, wherein the second sealing protrusionshave such a shape that a diameter thereof decreases as each one of theprotrusions extends from the second plate member towards the third platemember, wherein the first recessed portions on the first plate memberhave such a shape that a diameter on the side of the first plate memberis larger than that on the side of the second plate member, and whereinthe second recessed portions on the side of the second plate member havesuch a shape that a diameter on the side of the second plate member islarger than that on the side of the third plate member.
 6. The heatexchange device of claim 1, wherein both sides of the secondrectification walls of the second plate member coming in close contactwith the first rectification walls of the first plate member have such ashape that both the sides are depressed towards the first plate member,and wherein both sides of the third rectification walls of the thirdplate member coming in close contact with the second rectification wallsof the second plate member have such a shape that both the sides aredepressed towards the second plate member.
 7. A device for accommodatinga heat generation body, comprising: a cabinet for accommodating a heatgeneration body; and the heat exchange device of claim 1 mounted to anopening of the cabinet.
 8. The heat exchange device of claim 1, whereinthe first curved face is unitary with the first plate member, and thesecond curved face is unitary with the second plate member.
 9. The heatexchange device of claim 1, wherein first protrusions are provided onparts of the first rectification walls of the first plate member so asto protrude into first recessed portions which are formed on the secondrectification walls, and wherein second protrusions are provided onparts of the second rectification walls of the second plate member so asto protrude into second recessed portions which are formed on the thirdrectification walls.
 10. The heat exchange device of claim 9, whereinthe first protrusions protrude into the first recessed portions on thefirst plate member so as to make contact with inner top faces thereof,and wherein the second protrusions protrude into the second recessedportions on the second plate member so as to make contact with the innertop faces thereof.
 11. The heat exchange device of claim 1, whereinfirst protrusions are provided in sections of the first rectificationwalls of the first plate member where the first curved face is notformed, and wherein second protrusions are provided in sections of thesecond rectification walls of the second plate member where the secondcurved face is not formed.